What Is This Tool?
This converter allows you to transform length values measured in the obsolete long reed into the US survey chain (ch), a unit traditionally used in U.S. land surveying. It is useful for adapting historical measurements into standardized modern units.
How to Use This Tool?
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Enter the value in long reeds that you wish to convert
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Select 'long reed' as the unit to convert from
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Choose 'chain (US survey) [ch]' as the target unit
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Click convert to see the equivalent value in chains
Key Features
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Converts historical long reed units to US survey chains (ch) with ease
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Browser-based tool requiring no installation or specialized knowledge
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Facilitates interpretation of old land records and surveying data
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Supports legacy land measurement integration into modern mapping
Examples
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5 long reeds equal 0.7954529545 chains (US survey)
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10 long reeds equal 1.590905909 chains (US survey)
Common Use Cases
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Interpreting distances recorded in historical land deeds and parish records
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Converting old surveying measurements to modern units for property restoration
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Integrating legacy measurement data into GIS and cadastral mapping projects
Tips & Best Practices
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Verify historical context due to variability of the long reed's length by location and era
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Cross-reference old survey records to ensure accurate conversions
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Understand that the US survey chain uses the US survey foot, which slightly differs from the international foot
Limitations
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The long reed’s size varied historically, so conversion may not be precise without contextual data
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The US survey foot basis of the chain differs slightly from the international foot, affecting accuracy
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Legacy records may require additional interpretation due to unit inconsistencies
Frequently Asked Questions
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Why does the long reed unit vary in length?
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The long reed was a traditional measurement whose exact length differed depending on locality and historical period, causing variations in conversion.
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What is the US survey chain used for?
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The US survey chain is a traditional length unit used historically in U.S. land surveying, cadastral work, and describing property boundaries.
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Can I use this tool for modern engineering measurements?
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This tool is primarily intended for converting legacy land measurement units into standardized modern survey units; for direct engineering measurements, modern SI units are recommended.
Key Terminology
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Long Reed
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A traditional unit of length formerly used in historical land measurement with a variable magnitude depending on locality and period.
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Chain (US survey) [ch]
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A historic U.S. unit of length equal to 66 US survey feet, used in land surveying and subdivided into 100 links.
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US survey foot
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A unit of length used as the basis for the US survey chain; slightly differs from the international foot.